Peptide absorption: a review of current concepts and future perspectives.

K. E. Webb, J. C. Matthews, D. B. DiRienzo

Research output: Contribution to journalReview articlepeer-review

82 Scopus citations

Abstract

Absorption of di- and tripeptides from the gastrointestinal tract is accepted as being an important biological phenomenon. The extent to which peptides are absorbed and the nutritional and metabolic significance of peptide absorption remain unclear. Evidence is strong for the existence of multiple peptide transport systems, including one type that is electrogenic in nature and that requires a protonmotive force and cotransports two H+ for every peptide transported. The rate of absorption of peptides can be responsive to level of dietary intake and level of dietary protein. Peptide absorption seems to be an important physiological process in ruminants, and this process may account for a large portion of absorbed amino acids. An important new observation is that the nonmesenteric portion of the portal-drained viscera of the ruminant is a major site of peptide absorption. These new observations may result in a reshaping of the currently accepted theory concerning protein utilization by ruminants.

Original languageEnglish
Pages (from-to)3248-3257
Number of pages10
JournalJournal of Animal Science
Volume70
Issue number10
DOIs
StatePublished - Oct 1992

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

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